#include "md5c.h"
#include <stdio.h>
#include <string.h>

/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
 */

#include "MD5C.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21

static void MD5_memcpy(POINTER output, POINTER input, unsigned int len);
static void MD5Transform(UINT4 state[4], unsigned char block[64]);
static void Encode(unsigned char *output, UINT4 *input, unsigned int len);
static void MD5_memset(POINTER output, int value, unsigned int len);
static void Decode(UINT4 *output, unsigned char *input, unsigned int len);

static unsigned char PADDING[64] = {0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                                    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                                    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

/* F, G, H and I are basic MD5 functions.
 */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))

/* ROTATE_LEFT rotates x left n bits.
 */
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))

/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
Rotation is separate from addition to prevent recomputation.
*/
#define FF(a, b, c, d, x, s, ac)                     \
    {                                                \
        (a) += F((b), (c), (d)) + (x) + (UINT4)(ac); \
        (a) = ROTATE_LEFT((a), (s));                 \
        (a) += (b);                                  \
    }
#define GG(a, b, c, d, x, s, ac)                     \
    {                                                \
        (a) += G((b), (c), (d)) + (x) + (UINT4)(ac); \
        (a) = ROTATE_LEFT((a), (s));                 \
        (a) += (b);                                  \
    }
#define HH(a, b, c, d, x, s, ac)                     \
    {                                                \
        (a) += H((b), (c), (d)) + (x) + (UINT4)(ac); \
        (a) = ROTATE_LEFT((a), (s));                 \
        (a) += (b);                                  \
    }
#define II(a, b, c, d, x, s, ac)                     \
    {                                                \
        (a) += I((b), (c), (d)) + (x) + (UINT4)(ac); \
        (a) = ROTATE_LEFT((a), (s));                 \
        (a) += (b);                                  \
    }

/* MD5 initialization. Begins an MD5 operation, writing a new context.
 */
void MD5Init(MD5_CTX *context) /* context */
{
    context->count[0] = context->count[1] = 0;
    /* Load magic initialization constants.
     */
    context->state[0] = 0x67452301;
    context->state[1] = 0xefcdab89;
    context->state[2] = 0x98badcfe;
    context->state[3] = 0x10325476;
}

/* MD5 block update operation. Continues an MD5 message-digest
  operation, processing another message block, and updating the
  context.
 */
void MD5Update(MD5_CTX *context, unsigned char *input, unsigned int inputLen)

{
    unsigned int i, index, partLen;

    /* Compute number of bytes mod 64 */
    index = (unsigned int)((context->count[0] >> 3) & 0x3F);

    /* Update number of bits */
    if ((context->count[0] += ((UINT4)inputLen << 3)) < ((UINT4)inputLen << 3))
        context->count[1]++;

    context->count[1] += ((UINT4)inputLen >> 29);

    partLen = 64 - index;

    /* Transform as many times as possible.
     */
    if (inputLen >= partLen)
    {
        MD5_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
        MD5Transform(context->state, context->buffer);

        for (i = partLen; i + 63 < inputLen; i += 64)
            MD5Transform(context->state, &input[i]);

        index = 0;
    }
    else
        i = 0;

    /* Buffer remaining input */
    MD5_memcpy((POINTER)&context->buffer[index], (POINTER)&input[i], inputLen - i);
}

/* MD5 finalization. Ends an MD5 message-digest operation, writing the
  the message digest and zeroizing the context.
 */
void MD5Final(unsigned char digest[16], MD5_CTX *context)
{
    unsigned char bits[8];
    unsigned int index, padLen;

    /* Save number of bits */
    Encode(bits, context->count, 8);

    /* Pad out to 56 mod 64.
     */
    index = (unsigned int)((context->count[0] >> 3) & 0x3f);
    padLen = (index < 56) ? (56 - index) : (120 - index);
    MD5Update(context, PADDING, padLen);

    /* Append length (before padding) */
    MD5Update(context, bits, 8);

    /* Store state in digest */
    Encode(digest, context->state, 16);

    /* Zeroize sensitive information.
     */
    MD5_memset((POINTER)context, 0, sizeof(*context));
}

/* MD5 basic transformation. Transforms state based on block.
 */
static void MD5Transform(UINT4 state[4], unsigned char block[64])
{
    UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];

    Decode(x, block, 64);

    /* Round 1 */
    FF(a, b, c, d, x[0], S11, 0xd76aa478);  /* 1 */
    FF(d, a, b, c, x[1], S12, 0xe8c7b756);  /* 2 */
    FF(c, d, a, b, x[2], S13, 0x242070db);  /* 3 */
    FF(b, c, d, a, x[3], S14, 0xc1bdceee);  /* 4 */
    FF(a, b, c, d, x[4], S11, 0xf57c0faf);  /* 5 */
    FF(d, a, b, c, x[5], S12, 0x4787c62a);  /* 6 */
    FF(c, d, a, b, x[6], S13, 0xa8304613);  /* 7 */
    FF(b, c, d, a, x[7], S14, 0xfd469501);  /* 8 */
    FF(a, b, c, d, x[8], S11, 0x698098d8);  /* 9 */
    FF(d, a, b, c, x[9], S12, 0x8b44f7af);  /* 10 */
    FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
    FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
    FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
    FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
    FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
    FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */

    /* Round 2 */
    GG(a, b, c, d, x[1], S21, 0xf61e2562);  /* 17 */
    GG(d, a, b, c, x[6], S22, 0xc040b340);  /* 18 */
    GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
    GG(b, c, d, a, x[0], S24, 0xe9b6c7aa);  /* 20 */
    GG(a, b, c, d, x[5], S21, 0xd62f105d);  /* 21 */
    GG(d, a, b, c, x[10], S22, 0x2441453);  /* 22 */
    GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
    GG(b, c, d, a, x[4], S24, 0xe7d3fbc8);  /* 24 */
    GG(a, b, c, d, x[9], S21, 0x21e1cde6);  /* 25 */
    GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
    GG(c, d, a, b, x[3], S23, 0xf4d50d87);  /* 27 */
    GG(b, c, d, a, x[8], S24, 0x455a14ed);  /* 28 */
    GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
    GG(d, a, b, c, x[2], S22, 0xfcefa3f8);  /* 30 */
    GG(c, d, a, b, x[7], S23, 0x676f02d9);  /* 31 */
    GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */

    /* Round 3 */
    HH(a, b, c, d, x[5], S31, 0xfffa3942);  /* 33 */
    HH(d, a, b, c, x[8], S32, 0x8771f681);  /* 34 */
    HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
    HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
    HH(a, b, c, d, x[1], S31, 0xa4beea44);  /* 37 */
    HH(d, a, b, c, x[4], S32, 0x4bdecfa9);  /* 38 */
    HH(c, d, a, b, x[7], S33, 0xf6bb4b60);  /* 39 */
    HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
    HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
    HH(d, a, b, c, x[0], S32, 0xeaa127fa);  /* 42 */
    HH(c, d, a, b, x[3], S33, 0xd4ef3085);  /* 43 */
    HH(b, c, d, a, x[6], S34, 0x4881d05);   /* 44 */
    HH(a, b, c, d, x[9], S31, 0xd9d4d039);  /* 45 */
    HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
    HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
    HH(b, c, d, a, x[2], S34, 0xc4ac5665);  /* 48 */

    /* Round 4 */
    II(a, b, c, d, x[0], S41, 0xf4292244);  /* 49 */
    II(d, a, b, c, x[7], S42, 0x432aff97);  /* 50 */
    II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
    II(b, c, d, a, x[5], S44, 0xfc93a039);  /* 52 */
    II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
    II(d, a, b, c, x[3], S42, 0x8f0ccc92);  /* 54 */
    II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
    II(b, c, d, a, x[1], S44, 0x85845dd1);  /* 56 */
    II(a, b, c, d, x[8], S41, 0x6fa87e4f);  /* 57 */
    II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
    II(c, d, a, b, x[6], S43, 0xa3014314);  /* 59 */
    II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
    II(a, b, c, d, x[4], S41, 0xf7537e82);  /* 61 */
    II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
    II(c, d, a, b, x[2], S43, 0x2ad7d2bb);  /* 63 */
    II(b, c, d, a, x[9], S44, 0xeb86d391);  /* 64 */

    state[0] += a;
    state[1] += b;
    state[2] += c;
    state[3] += d;

    /* Zeroize sensitive information.
     */
    MD5_memset((POINTER)x, 0, sizeof(x));
}

/* Encodes input (UINT4) into output (unsigned char). Assumes len is
  a multiple of 4.
 */
static void Encode(unsigned char *output, UINT4 *input, unsigned int len)
{
    unsigned int i, j;

    for (i = 0, j = 0; j < len; i++, j += 4)
    {
        output[j] = (unsigned char)(input[i] & 0xff);
        output[j + 1] = (unsigned char)((input[i] >> 8) & 0xff);
        output[j + 2] = (unsigned char)((input[i] >> 16) & 0xff);
        output[j + 3] = (unsigned char)((input[i] >> 24) & 0xff);
    }
}

/* Decodes input (unsigned char) into output (UINT4). Assumes len is
  a multiple of 4.
 */
static void Decode(UINT4 *output, unsigned char *input, unsigned int len)
{
    unsigned int i, j;

    for (i = 0, j = 0; j < len; i++, j += 4)
        output[i] =
            ((UINT4)input[j]) | (((UINT4)input[j + 1]) << 8) | (((UINT4)input[j + 2]) << 16) | (((UINT4)input[j + 3]) << 24);
}

/* Note: Replace "for loop" with standard memcpy if possible.
 */

static void MD5_memcpy(POINTER output, POINTER input, unsigned int len)
{
    unsigned int i;

    for (i = 0; i < len; i++)
        output[i] = input[i];
}

/* Note: Replace "for loop" with standard memset if possible.
 */
static void MD5_memset(POINTER output, int value, unsigned int len)
{
    unsigned int i;

    for (i = 0; i < len; i++)
        ((char *)output)[i] = (char)value;
}

/* Digests a file and prints the result.
 */
int MD5File(char *filename, unsigned char digest[16])
{
    FILE *file;
    MD5_CTX context;
    int len, file_size, size = 0;
    unsigned char buffer[1024];
    // printf("file name %s\n", filename);
    if ((file = fopen(filename, "rb")) == NULL)
        return -1;
    else
    {
        // printf("file open succ\n");

        if (fseek(file, 0, SEEK_END) != 0)
        { // 移动文件指针到文件末尾
            printf("fseek failed\n");
            return -1;
        }
        file_size = ftell(file); // 获取此时偏移值，即文件大小
        if (fseek(file, 0, SEEK_SET) != 0)
        { // 将文件指针恢复初始位置
            printf("fseek failed\n");
            return -1;
        }

        MD5Init(&context);
        static int getlen = 0;
        while (file_size--)
        {
            buffer[getlen++] = fgetc(file);
            if (getlen == 1024)
            {
                MD5Update(&context, buffer, getlen);
                size += getlen;
                getlen = 0;
            }
        }
        if (getlen)
        {
            MD5Update(&context, buffer, getlen);
            size += getlen;
            getlen = 0;
        }
        MD5Final(digest, &context);
        fclose(file);
    }
    return 0;
}

char fname_master_new[FILENAME_MAX] = {0};
char fname_slave_new[FILENAME_MAX] = {0};
char fname_sing_new[FILENAME_MAX] = {0};
char file_log[FILENAME_MAX] = {"log.txt"};

int hex_str(unsigned char *data, char *str, unsigned char len)
{
    unsigned int i, size = 0;
    for (i = 0; i < len; i++)
    {
        size += sprintf(str + size, "%02X", data[i]);
    }
}

int write_log(char *log1, char *log2, char *log3)
{
    unsigned char md51[16] = {0}, md52[16] = {0}, md53[16] = {0};
    char md5_str1[FILENAME_MAX] = {"000000"};
    char md5_str2[FILENAME_MAX] = {"000000"};
    char md5_str3[FILENAME_MAX] = {"000000"};

    FILE *fp;
    // system("pause");
    MD5File(fname_master_new, md51);
    hex_str(md51, md5_str1, 16);
    MD5File(fname_slave_new, md52);
    hex_str(md52, md5_str2, 16);
    MD5File(fname_sing_new, md53);
    hex_str(md53, md5_str3, 16);

    fp = fopen(file_log, "a+");
    fseek(fp, 0, SEEK_END);

    fprintf(fp, "%s\t", log1);
    fprintf(fp, "MD5: %s\n\n", md5_str1);

    fprintf(fp, "%s\t\t", log2);
    fprintf(fp, "MD5: %s\n\n", md5_str2);

    fprintf(fp, "%s\t", log3);
    fprintf(fp, "MD5: %s\n\n\n", md5_str3);
    fclose(fp);
    // system("pause");
}
int main(int argc, char **argv)
{
    int ch;
    FILE *fp;

    char fname_master[FILENAME_MAX] = {0};
    char fname_slave[FILENAME_MAX] = {0};
    char fname_sing[FILENAME_MAX] = {0};
    sscanf(argv[1], " %s", &fname_master);
    sscanf(argv[2], " %s", &fname_slave);
	sscanf(argv[3], " %s", &fname_sing);
    sscanf(argv[4], " %s", &fname_master_new);
    sscanf(argv[4], " %s", &fname_slave_new);
	 sscanf(argv[4], " %s", &fname_sing_new);
    char newname[FILENAME_MAX] = {0};
    int len_head = strlen(fname_master_new);
    int add = 0x45f00;
    int p = 0;
    char log1[FILENAME_MAX] = {0}, log2[FILENAME_MAX] = {0}, log3[FILENAME_MAX] = {0};
    // printf("文件名：");
    // scanf("%s", fname_old);
    if ((fp = fopen(fname_master, "rb")) == NULL)
    {
        printf("文件打开失败!!\n");
    }
    else
    {
        if (fseek(fp, add, SEEK_SET) != 0)
        { // 将文件指针恢复初始位置
            printf("fseek failed");
            return -1;
        }
        while ((ch = fgetc(fp)) != '\0')
        {
            newname[p] = ch;
            p++;
        }
        printf("new:%s,", newname);
        fclose(fp);
        sprintf(fname_master_new + len_head, "%s_(OTA).bin", newname);
        sprintf(fname_slave_new + len_head, "%s.bin", newname);
        sprintf(fname_sing_new + len_head, "%s_ajwt_ota.bin", newname);
        printf("%s\n", fname_master_new);
        printf("%s\n", fname_slave_new);
    }
    int x = rename(fname_master, fname_master_new);
    int y = rename(fname_slave, fname_slave_new);
    rename(fname_sing, fname_sing_new);
    sprintf(log1, "%s_(OTA).bin", newname);
    sprintf(log2, "%s.bin", newname);
    sprintf(log3, "%s_ajwt_ota.bin", newname);
    write_log(log1, log2, log3);
    printf("rename status:%d,%d\n", x, y);
}
